We determined in situ cosmogenic
10Be ages for 11 boulders on the Hoher Fl盲ming ice
marginal belt and five boulders on the Gerswalder moraine, a recessional moraine
of the Pomeranian stage. Previous time estimations for the deposition
of these moraines along the southern
margin of the Scandinavian Ice Sheet (SIS) in northeastern Germany are mostly based on geomorphology and stratigraphy, and on few radiocarbon dates and recently published surface
exposure ages in the case
of the Pomeranian moraine. Our new
exposure ages range from 21.7 卤 1.2
10Be ka to 172.6 卤 6.0
10Be ka for the Hoher Fl盲ming ice
marginal belt. The wide range
of exposure ages may reflect episodic ice
marginal belt modification due to intensified erosion by meltwater channeled in the Baruther Urstromtal, (ice
marginal valley) accompanied by long-lasting erosional processes like solifluction and aeolian deflation.
For the Gerswalder moraine, our new exposure ages range from 12.3 卤 0.6 10Be ka to 16.6 卤 1.0 10Be ka. Excluding the youngest sample (BER-97-03), we calculated error-weighted mean ages ranging from 15.2 卤 0.5 10Be ka to 16.0 卤 0.5 10Be ka (n = 4), depending on choice of scaling methods, surface erosion and snow cover. These results firmly establish the position of the southern margin of the SIS in northeastern Germany during the Gerswalder substage a recessional phase of the Pomeranian stage.